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ADA Programming Guide
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ADA Programming Guide.iso
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ada_gwu
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adacomp.c
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1996-01-30
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476 lines
/*
* Copyright (C) 1985-1992 New York University
*
* This file is part of the Ada/Ed-C system. See the Ada/Ed README file for
* warranty (none) and distribution info and also the GNU General Public
* License for more details.
*/
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#ifdef __GNUG__
#define WAITPARM (int*)
#else
#define WAITPARM (union wait*)
#endif
#include "config.h"
#include "adamrgp.h"
#include "miscp.h"
#include <sys/types.h>
#ifdef IBM_PC
#include <fcntl.h>
#include <process.h>
#else
#include <sys/file.h>
#endif
#ifdef SYSTEM_V
#include <fcntl.h>
#endif
#include <signal.h>
#ifdef BSD
#include "time.h"
#include <sys/resource.h>
#endif
static int check_status(int, char *, char *);
static char *getsym(char *, char *);
static void arg_dump();
static int run_prog(char *, char **);
static void delete_file(char *);
char *argname;
int opts_cnt;
char *other_opts[20];
char *interface_opts[20];
int interface_cnt = 0;
int maxstatus = RC_SUCCESS; /* maximum exit status from called programs */
int exec_trace = 0; /* set to print generated command lines */
/* names of executables to use if not defined by environment */
#define FRONT_NAME "adafront"
#define GEN_NAME "adagen"
#define BND_NAME "adabind"
/* status_get extracts program exit code */
#ifdef IBM_PC
#define status_get(s) (s)
#define system_status_get(s) (s)
#else
#define status_get(s) ((s)>>8)
#define system_status_get(s) ((s) & 0xff)
#endif
char *base_name;
main(int argc, char **argv)
{
int c,fp;
int status, ok = TRUE;
extern int optind;
extern char *optarg;
char *FRONT, *GEN, *BND;
char *arg_name;
char *lib_name;
char *list_name;
char *source_name;
char *msg_name;
char *tmp_name;
char *s_temp;
char *l_name;
char *basep;
int prefix_len, base_len, suffix_len;
char *lib_opt_str, *main_unit_name;
char *object_files = "";
char *front_options, *gen_options;
int bind_opt = 0, main_opt = 0, save_msg_opt = 0 ;
int list_opt = FALSE; /* set to generate a listing */
char *list_arg; /* for passing list_opt to mrg */
int lib_opt = FALSE; /* set to TRUE if -l specified */
int newlib_opt = FALSE; /* set to TRUE if -n specified */
int time_limit = 15; /* default time limit in minutes */
#ifdef BSD
struct rlimit rlp;
#endif
/* initializations */
arg_name = (char *) 0;
lib_name = (char *) 0;
front_options = "";
gen_options = "";
/*
* command options
* -a generated line number instructions
* -b bind the unit specified by 'm' option
* -g insert generated code into listing
* -i specify object files and libraries for pragma interface
* -l libname (old) library libname
* -m main unit specify the main binding unit.
* or use default main unit
* -n libname new library libname
* -s create source program listing
* -v trace executed commands and exit status
* -Y save message files (for running B tests)
* -P compile predef
*/
#ifdef IBM_PC
while((c = getopt(argc, argv, "AaBbGgL:l:M:m:NnSsVvYPi:")) != EOF) {
if (isupper(c)) c = tolower(c);
#else
while((c = getopt(argc, argv, "abgl:m:nsvMPi:")) != EOF) {
#endif
switch(c) {
case 'a':
s_temp = emalloc(strlen(gen_options) + 2);
strcpy(s_temp, gen_options);
strcat(s_temp, "l");
gen_options = s_temp;
break;
case 'b':
bind_opt = 1;
break;
case 'g':
s_temp = emalloc(strlen(gen_options) + 2);
strcpy(s_temp, gen_options);
strcat(s_temp, "g");
gen_options = s_temp;
break;
case 'l':
lib_opt = TRUE;
lib_name = emalloc(strlen(optarg) + 1);
strcpy(lib_name, optarg);
break;
case 'm':
main_opt = 1;
main_unit_name = emalloc(strlen(optarg) + 1);
strcpy(main_unit_name, optarg);
break;
case 'n':
newlib_opt = TRUE;
break;
case 'i':
s_temp = emalloc(strlen(optarg) + 1);
strcpy(s_temp, optarg);
interface_opts[interface_cnt++] = s_temp;
break;
case 's':
list_opt++;
break;
case 'v':
exec_trace++;
break;
case 'Y':
save_msg_opt = TRUE ;
break;
case 'p':
case 'P':
s_temp = emalloc(strlen(front_options) + 2);
strcpy(s_temp, front_options);
strcat(s_temp, "p");
front_options = s_temp;
s_temp = emalloc(strlen(gen_options) + 2);
strcpy(s_temp, gen_options);
strcat(s_temp, "p");
gen_options = s_temp;
break;
case '?':
exit(RC_ABORT);
break;
default:
fprintf(stderr, "Unknown Option: %c\n", c);
exit(RC_ABORT);
}
}
if (optind < argc)
arg_name = argv[optind];
if (arg_name == (char *) 0) {
fprintf(stderr,"Invalid Usage: No ada file specified\n");
exit(RC_ABORT);
}
if (!lib_opt) { /* if -l not specified, try to get from environment */
lib_name = getenv("ADALIB");
if (lib_name!=(char *)0) {
lib_opt++;
}
if (lib_opt) {
printf("library defined by ADALIB: %s\n",lib_name);
}
}
if (!lib_opt) {
fprintf(stderr,
"Invalid Usage: please specify a library\n");
exit(RC_ABORT);
}
#ifdef BSD
getrlimit(RLIMIT_CPU,&rlp);
(&rlp)->rlim_cur = time_limit*60; /* limit to time_limit mins */
setrlimit(RLIMIT_CPU,&rlp);
#endif
basep = parsefile(arg_name, &prefix_len, &base_len, &suffix_len);
/* check for presence of ada file; if none, make it ada */
if (suffix_len ==0) {
source_name = emalloc(strlen(arg_name) + 4 + 1);
strcpy(source_name, arg_name);
strcat(source_name, ".ada");
}
else {
source_name = arg_name;
}
base_name = emalloc(base_len + 1);
strncpy(base_name, basep, base_len);
if ((fp = open(source_name,O_RDONLY,0700)) < 0) {
fprintf(stderr,"Cannot access file %s\n",source_name);
exit(RC_ABORT);
}
close(fp);
#ifdef MONITOR
{
FILE *fp;
fp = fopen( "CWKLIB.$$$", "w" );
fprintf( fp, "%s\n", source_name );
fclose(fp);
}
#endif
if (newlib_opt){
if (exec_trace) {
fprintf(stderr, "mkdir %s ", lib_name);
}
status = mkdir(lib_name, 0777);
if (exec_trace) {
fprintf(stderr, " ? %d\n", status);
}
}
status = 0;
if (status) {
fprintf(stderr,"%s cannot be used as a library\n", lib_name);
exit(RC_ABORT);
}
if (!newlib_opt) {
/* check for presence of library file */
l_name = emalloc(strlen(lib_name) + strlen(LIBFILENAME) + 2);
strcpy(l_name, lib_name);
#ifdef BSD
strcat(l_name, "/");
#endif
#ifdef SYSTEM_V
strcat(l_name, "/");
#endif
#ifdef IBM_PC
strcat(l_name, "/");
#endif
strcat(l_name, LIBFILENAME);
if ((fp = open(l_name,O_RDONLY,0700)) < 0) {
fprintf(stderr,"%s cannot be used as a library\n", lib_name);
exit(RC_ABORT);
}
efree(l_name);
close(fp);
}
/* format library option as expected by adafront & adagen */
lib_opt_str = ((newlib_opt) ? "-nl" : "-l");
FRONT = getsym("ADAFRONT", FRONT_NAME);
other_opts[opts_cnt = 0] = FRONT;
if (strlen(front_options) != 0) {
other_opts[++opts_cnt] = "-s";
other_opts[++opts_cnt] = front_options;
}
other_opts[++opts_cnt] = lib_opt_str;
other_opts[++opts_cnt] = lib_name;
other_opts[++opts_cnt] = source_name;
other_opts[++opts_cnt] = (char *) 0;
if (exec_trace)
arg_dump();
status = run_prog(FRONT, other_opts);
if (exec_trace)
fprintf(stderr, " ? %d\n", status);
ok = check_status(status, "FRONT", arg_name);
/* check for front end errors (adafront will exit with RC_ERRORS) */
if (status_get(status)== RC_ERRORS)
ok = FALSE;
if (ok) {
GEN = getsym("GEN", GEN_NAME);
other_opts[opts_cnt = 0] = GEN;
if (strlen(gen_options) != 0) {
other_opts[++opts_cnt] = "-g";
other_opts[++opts_cnt] = gen_options;
}
other_opts[++opts_cnt] = lib_opt_str;
other_opts[++opts_cnt] = lib_name;
other_opts[++opts_cnt] = base_name;
other_opts[++opts_cnt] = (char *) 0;
if (exec_trace)
arg_dump();
status = run_prog(GEN, other_opts);
if (exec_trace)
fprintf(stderr, " ? %d\n", status);
ok = check_status(status, "GEN", arg_name);
}
if (ok && bind_opt) { /* run binder if desired */
BND = getsym("BND", BND_NAME);
other_opts[opts_cnt = 0] = BND;
other_opts[++opts_cnt] = "-c"; /* indicate errors in message form */
other_opts[++opts_cnt] = base_name; /* pass filename for msg listing */
while(interface_cnt) {
other_opts[++opts_cnt] = "-i";
other_opts[++opts_cnt] = interface_opts[--interface_cnt];
}
if (main_opt) {
other_opts[++opts_cnt] = "-m";
other_opts[++opts_cnt] = main_unit_name;
}
other_opts[++opts_cnt] = lib_name; /* library is current directory */
other_opts[++opts_cnt] = (char *) 0;
if (exec_trace)
arg_dump();
status = run_prog(BND, other_opts);
if (exec_trace)
fprintf(stderr, " ? %d\n", status);
ok = check_status(status, "BND", arg_name);
}
#ifdef IBM_PC
list_name = emalloc(strlen(base_name) + 4 + 1);
strcpy(list_name, base_name);
strcat(list_name, ".lis");
#endif
#ifdef SYSTEM_V
list_name = emalloc(strlen(base_name) + 4 + 1);
strcpy(list_name, base_name);
strcat(list_name, ".lis");
#endif
#ifdef BSD
list_name = emalloc(strlen(base_name) + 4 + 1);
strcpy(list_name, base_name);
strcat(list_name, ".lis");
#endif
list_arg = (list_opt>0) ? "1" : "0";
msg_name = emalloc(strlen(lib_name) + strlen(base_name) + 7);
strcpy(msg_name, lib_name);
#ifdef BSD
strcat(msg_name,"/");
#endif
#ifdef SYSTEM_V
strcat(msg_name,"/");
#endif
#ifdef IBM_PC
strcat(msg_name,"/");
#endif
strcat(msg_name, base_name);
strcat(msg_name, ".msg");
status = mrg(source_name,msg_name, list_name, list_arg);
efree(list_name);
if (!save_msg_opt) {
delete_file(msg_name);
efree(msg_name);
}
exit(maxstatus);
}
static char *getsym(char *env_name, char *def_value) /*;getsym*/
{
/* Retrieve environment variable designating the executable module for
* a given phase of the compiler.
* If the variable is not defined, a default is supplied for BSD systems.
*/
char *s;
s = getenv(env_name);
if (s==(char *)0) {
char *t = get_libdir();
s = emalloc(strlen(t) + strlen(def_value) + 2);
sprintf(s,"%s/%s", t, def_value);
}
return s;
}
static int check_status(int pstatus, char *phase, char *filename)
/*;check_status*/
{
#ifdef BSD
if (system_status_get(pstatus) == SIGXCPU) {
fprintf(stderr, "Ada/Ed cpu time limit exceeded for %s\n",phase);
return (FALSE);
}
#endif
/* check for internal compiler error and a signal (system transmitted)
* that is not IGNORE (1) or BAD_SIGNAL (-1)
* Check first for crash, since have no guarantee what will appear
* in 'user' section of return code (status_get field)
*/
if ( (status_get(pstatus) == RC_INTERNAL_ERROR)
|| (system_status_get(pstatus) > 1 && system_status_get(pstatus) < 255)) {
maxstatus = RC_INTERNAL_ERROR;
fprintf(stderr,"Ada/Ed Internal error(%s) for %s\n", phase, filename);
return (FALSE);
}
if (status_get(pstatus) == RC_SUCCESS) {
return (TRUE);
}
if (status_get(pstatus) == RC_ERRORS){
maxstatus = RC_ERRORS;
return (TRUE);
}
if (status_get(pstatus) == RC_ABORT) {
maxstatus = RC_ABORT;
return (FALSE);
}
}
static void arg_dump() /*;arg_dump*/
{
/*list generated command*/
int i;
fprintf(stderr, "%s ", other_opts[0]);
for (i = 1; i < opts_cnt; i++) {
fprintf(stderr, " %s", other_opts[i]);
}
fprintf(stderr,"\n");
}
static int run_prog(char *prog, char **args) /*;run_prog*/
{
int status;
#ifdef IBM_PC
status = spawnv(P_WAIT, prog, args);
#else
if (fork() == 0)
if (execvp(prog , other_opts)) {
fprintf(stderr,"cannot execute %s\n", prog);
exit(RC_ABORT);
}
wait( WAITPARM &status);
#endif
return status;
}
static void delete_file(char *file_name) /* ;delete_file */
{
int status;
status = unlink(file_name);
if (exec_trace)
fprintf(stderr,"unlink %s ? %d\n",file_name, status);
}